GBA Drop

PSP Drop

GBA Steal

PSP Steal

SNES Abilities

GBA Abilities

PSP Abilities

It will cast Reflect upon itself, then the party, and then will cast powerful magic like Holy, Flare, and Bio upon itself to reflect them to the party. It appears more frequently than other encounters in its floors, and is difficult to escape from (excluding using of Smoke or Teleport).

A good strategy is to use Jump with Kain, physical attacks with Cecil, and maybe throw with Edge if the party has Shurikens. Rydia can reflect spells off the party, and summon. Rosa's healing abilities are limited due to Reflect on the party, preventing her from targeting specific members, or the entire party, but she can cast Holy on a reflected party member to deal damage to Deathmask.

The Deathmask has 37,000 HP, the second highest (first being Zemus's Breath) HP as a random encounter in the game. In the DS version, the Red Dragon has 50,000 HP, and the Behemoth has 47,000, so the Deathmask has the fourth highest HP.